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Configuring Fibre Channel Domain Parameters
This chapter describes how to configure Fibre Channel domain parameters.
This chapter includes the following sections:
•
Information About Domain Parameters
The Fibre Channel domain (fcdomain) feature performs principal switch selection, domain ID distribution,
FC ID allocation, and fabric reconfiguration functions as described in the FC-SW-2 standards. The domains
are configured on a per-VSAN basis. If you do not configure a domain ID, the local switch uses a random
ID.
Changes to fcdomain parameters should not be performed on a daily basis. These changes should be made
Caution
by an administrator or individual who is completely familiar with switch operations.
When you change the configuration, be sure to save the running configuration. The next time you reboot the
switch, the saved configuration is used. If you do not save the configuration, the previously saved startup
configuration is used.
Fibre Channel Domains
The fcdomain has four phases:
• Principal switch selection—This phase guarantees the selection of a unique principal switch across the
• Domain ID distribution—This phase guarantees that each switch in the fabric obtains a unique domain
• FC ID allocation—This phase guarantees a unique FC ID assignment to each device attached to the
• Fabric reconfiguration—This phase guarantees a resynchronization of all switches in the fabric to ensure
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Information About Domain Parameters, page 29
fabric.
ID.
corresponding switch in the fabric.
they simultaneously restart a new principal switch selection phase.
Cisco Nexus 5500 Series NX-OS SAN Switching Configuration Guide, Release 7.x
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